Soil-pulverizer.



L. n. cams. SOIL PULVERIZER.

APPLICATION FILED DEC-I. 19H.

PatentedMay 7,1918.

2 SHEETS-SHEET I.

Le y 8 f L. D. OBITTS.

SOIL PULVERIZER.

APPLICATION FILED om?. |911.

196594 Patented May 7, 1918.

2 SHEETS-SHEET 2.

v i 3g i v c y n@ "E '/"ii .3.9 @W 40 that no limitation 1,265,491. Speciication of To all 'whom t may concer/n:

Be it known that l, Lns'rnn D'Qrrrs, citizen of the UnitedStates, residing at Wellington, in the county of Lorain and State of Ohio, have invented new and useful lmprovements in Soil-Pulverizers, of which the following is a specification- This invention relates to soil pulverizers and it has for its object to produce a machine of this class which may be usefully and effectively employed for the purpose of breaking the clods and reducing the soil to a good condition for subsequent cultivation, and which may be used either by itself or in connection with a soil tilling implement, such as a gang plow.

A further object of the invention is to produce a machine of the character described having simple and improved means, whereby the pulverizing teeth are connected with a rotary sha t.

A. further object of the invention is to simplify and improve the arrangement an assemblage of parts entering into the construction of the device. With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists inthe improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying ldrawings has been illustrated a simple and preferred form of the invention, it being, however, understood is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings Figure 'l is a top plan view of a machine constructed in accordance with the invention.

Fig. Fig. on the line 3-3 larger scale.

` Fig. 4 is a sectional detail view the line 4-4 in Fig. 2, also drawn larger scale,

2 isa rear `elevation of the same.

3 is a transverse sectional view taken in Fig. 2, but drawn to a taken on to a LESTER '.D. OBITTS, OF WELLINGTON, OHIO.

SOIL-PULVEBIZER.

Leaers Patent. patented May fr, faire.

Application filed December 7, 1917. Serial No. 206,021.

Fig. 5 is a perspective detail view showing two of the tooth holding members an a portion of a tooth secured between the same.

Fig. 6 is a perspective detail view of one of the spacing members detached.

Fig. 7 is a perspective detail view of one of the bearing devices for securing the shaft carrying bars or arms.

Fig. 8 is a sectional the line 8-8 in Fig. 2.

Fig. 9 is a sectional detail ing a modification.

Corresponding parts in the several gures are denoted by like characters of reference.

The frame of the improvecL machine includes a tubular bearing member 15 and forwardly convergent side members 16 that cooperate with said tubular bearing member to produce an approximately triangular frame structure, the same being reinforced by a cross bar 17 which may be utilized to support a motor for propelling the machine, such motor being conventionally indicated at 18. A front truck 19 supports the forward end of the frame structure` said truck being preferably mounted in such a manner as to permit it to be utilized for steering purposes. An axle 20 is supported for rotation by the tubular bearing me ber 15, said axle having ground wheels Q1. rlhe tubular bearing member may be omitted and the axle may be supported for rotation in any convenient well known manner.

Mounted on the frame structure are bearing members 22 each having a spindle 23 engaging a socket 24 which is securely mounted on a bar 25, which is thus swingingly connected with the frame for movement in an approximately vertical plane.

The bars 25, of which two are preferably employed, are each provided adjacent to the free ends thereof with a box or bearing 26 having a grease cup 27, said boxes affording bearings for a shaft 28 which is square in cross section throughout its length, except at the ends thereof which are shaped to form journals 29 engaging the bearings 26. rThe shaft Q8 is provided with sprocket wheels 30, which are connected by chains 31 with sprocket wheels 3:2 mounted on the axle 20 detail view taken on view illustrat- Aso for rotation therewith, motion being in this manner transmitted to the shaft 28.

The shaft 28 is provided with radially extending ground engaging teeth 33, said teeth being securely but detachably connected with the shaft, in sets of four, by means of special attaching devices, which will be presently described, it being understood that the four teeth of each set extend radially with respect to the shaft in a plane substantially at right angles to the axis of the shaft, and at an angle of 90 with re spect to each other.

he means for connecting' each set of four teeth with the shaft comprises four plates or castings of t-rapezoidal form, each of said plates being' designated by 34, and each of said plates being provided at the convergent side edges thereof with angular grooves 35, the grooves of two proximate castings being designed to receive the square shank portion of 'one of the teeth 33. Each plate or casting 34 is provided adjacent to the grooved convergent side edges thereof with oppositely extending flanges 36 having apertures 37 for the passage of connect-ing bolts 38. The parts are to be so proportioned that by the tightening of the bolts a clamping action will be exerted on the respective teeth, whereby said teeth will be held securely in position. At the same time it will be evident that by loosening the bolts the teeth may be detached for sharpening or renewal without disconnecting the plates'34. l't will also be evident that the said plates or castings 34 are to be so proportioned and shaped that when four of said plates or castings are assembled, the short sides thereof will approximately abut on the side faces of the square shaft with which the plates or castings and teeth will thus be assembled. For the purpose of properly spacing the tooth holding elements on the shaft, spacing members are provided, each consisting of a fiat plate 39 of a width equal to one side of the shaft and of the length equal to the distance at which the sets of teeth are to be spaced 39 is provided at the ends thereof with lip-turned lugs l0 which are provided with openings 41 for the passage of bolts 42, whereby they are assembledl with the plates or castings 34, the latter being provided with corresponding openings 43.

In this simple manner the sets of tooth holding devices will be properly and securely spaced apart. The spacing plates or members 29 may be dispensed with if preferred, and the individual tool yholding members may be provided with mutually abutting lugs as indicated at 39 in Fig. 9.

1t is desirable to provide means whereby the tooth carrying shaft may be raised from the ground to facilitate transportation of the machine from one place to another. For

vthe shaft, said c this purpose uprights 51 are provided, said uprights being mounted on the frame structure adjacent to the bearing members 22. Each of these uprights is provided at its upper end with a grooved wheel or sheave 52 over which a chain 53 is guided. The chain 53 carries at one end thereof a. hook bolt 541 which hooks over the shaft 28. Mounted in a suitable location on the frame structure of the machine is a transverse shaft 55 providedV adjacentl to the ends thereof with cranks 56`with whichthe chains 53 are connected. The shaft 55 also has a hand lever 57 equipped with a stop member 58 engaging a quadrant 59 whereby the said lever and related parts may be retained in position at various adjustments. It will be readily seen that by actuating the hand lever, the tooth carrying shaft may be raised from engagement with the ground and supported at the desired elevation. It is obvious that a seat for the driver may be provided, such seathaving been indicated at 60.

In the operation of this invention it will be evident that the soil will be stirred, agitated and pulverized by the action of the teeth extending from the shaft 28 to which a rotary motion is imparted. The machine may be propelled by a motor mounted thereon as described, or it may be drawn by a tractor or by animal power, It mayalso be used independently, or it may be drawn in advance or behind any soil tilling chine, such as a gang plow and the like, as may be found desirable, and with good resuits. j.

What is claimed is l. ln a soil pulverizer, a shaft supported` for rotation, said shaft being of square cross section, clamping members abutting on the side faces of the shaft, said clamping members having convergent grooved side edges, teeth seated in the grooves of proximate clamping members, and means fordrawing the clamping members together to clamp the teeth therebetween.

2. In a soil pulverizer, a shaft supported for rotation, clamping members surrounding the shaft and having grooves in their proximate side edges, teeth seated in the grooves, and means for drawing the clamp-ingv me` bers together to clamp the teeth therebetween.

3- In a soil pulverizer, a shaft supported for rotation, clam ing members surrounding amping members having convergent and contacted grooved and oppositely thereto, teeth seated in the grooves of proximate clamping members, and bolt-s extending through the flanges for drawingA the clamping members together to retain the teeth therebetween.

4. In a soil pulverizer, a shaft supported side edges n. extended flanges n adjacent for rotation, clamping members surrounding the shaft, sa-id clamping members having convergent and contacted grooved side edges and oppositely extended flanges adjacent thereto, teeth seated in the grooves of proximate clamping members, and bolts extending through the flanges for drawing the clamping members together to' retainl the teeth therebetween; in: combination wif-,1i-

spacing members disposed contiguously to 10 the shaft and having terminal lugs, and means whereby .the lugs are connected with the clampingmembers.

l In testlmony whereof I am): my signature.

LESTER D. OBITTS.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

